Floor-surfacing machine.



J. B. DYER.

FLOOR SUEFACING MACHINE.

APPLIUATION FILED MAY 1, 190a.

Patented Jan. 26, i909.

INVFNTOR ff C). f/

WITNESSES (pa j r 'iuvfllka rotation of said ried loose ions s: or esroiFLooR-srmFAoiNe maennm.

sionroller upwardly of the device in either direction of movement.

My invention further and specifically re sidesin'the following featuresof construction, arrangement and. operation, to be hereinafter describedwith reference to the accompanying drawings, forming a part of thisspecification, in which like numerals are used to designate like partsthroughout the several figures, and in which,

. Figure 1 is a side elevationof my im device. Fig. 2 is a frontelevation t ereof. Fig. 3 is a diagrammatic view of the gear connectionfor driving the pro elling wheels, and, Fig. 4 is a fragmentary detailedelevation of the clutch mechanism.

In the practical embodiment of my invention, I provide a su portingframe 5, through which is mounte a centrally transverse shaft 6,carrying a pulley wheel 7 splined thereon and upon the outer ends ofwhich are loosely mounted the ends of the U-shaped extensions 8 of thehandle Q. Mounted upon the supporting frame 5, is a motor 10, suppliedwith current by wires 11 leading to inding 0st 12 thereon, from' the upor por tion of t e handle 9', and connects with a lamp cord 13, or thelike, through a reversing key switch 14, by which the"direction'of motoris controlled. Mounted through-the sup orting frame 5, on either side ofthe central shaft 6, are shafts 15, carrying friction wheels 16, meshingwith and drive by a small friction wheel 1 7,'carl upon said shaft6,.and secured wheel 7, which wheel 7 is reto the pul ey tated by atwisted belt 18, driving thesarne from the shaft 19 of the motor 10.Mounted also through the supporting frame 5, adjacent the shafts 15, arepropelling shafts 20, carrying rubber tired propellingwheels 21, andprovided with gears 22 meshing with and rotated by the small gears 23carried Specification p! Letters Patent. Application flied m 1, mos.Barlakflu. 430,423,

I, Join; B Dvnn, .a citiroved Patented Ian. 26, 1909.

shafts 15. These connections are upon said i 3 from more particularlyshown in Fig. which it is seen that the apparatus will be moved alon thefloor to be surfaced, by the rollers 21 t rough the connections justdescribed.

Mounted upon each side of the motor 1t)i with one of their" ends looselyassociate about the shaft 19, are a pair. of ivotal arms 24, extendingtherefrom and having their outer ends loosely connected upon atransverse shaft 25 carrying a surfac roller 26 between the forwardextensions 0 the su porting frame 5, which extensions may rovided withrubber buffers 27. The surace roller 26, may be in the form of a sanddrum or polishing roller,'whichever is. necessary for use upon the floorto surfaced. By reason of its ivotal supporting rod 24, loosely connectethereto and to the shaft 19 of the motor 10, the surfacin roller 26, iscapable of rotation about said s aft 19, and upon the swinging movementof the handle 9, the extensions 8 of which have pivotal conecting links28, extending from the same to said sup orting arms 24, and whenso movedas sfiown 1n dotted lines in Fig. 1, the apparatus is adapted forreverse movement without turning the same around, the movement in thereverse direction being effected by the reversal of switch 14, reversingthe action of the motor 10, The surfacing roller 26 is driven from theshaft 19 of the motor 10 by a belt 29, extending therefrom and engaginga pulley wheel mounted upon the shaft 25.

pelling wheels 21 when it is verse .the movement of the apparatus, Iprovide the pulley wheel 7 mounted upon the shaft 6 and having the smallfriction wheel 17, connected therewith, with a circumferential slottedsleeve 31 ,extending outwardly therefrom and surrounding the transverseshaft 6 from which said pulley wheel 7 is splined, as before describedand on which said pulley wheel is therefore capable of sliding. Mountedwith its end loosely asso-' ciated' about the extremity of the shaft 6beond the lower end of the extension 8 of the handle 9, and curveddownwardly is a bracket arm'32 in the lower end of which is pivotallymounted a bell-crank lever 33, hav ng the pnds of its vertical extensionengaging within the circumferential slot of the sleeve 31, whereby thevertical swinging movemoot of its horizontal arm will cause the slidablemovement of the pulley wheels 7 upon the shaft 6 to engage ,or lisengageits small friction wheel 17, with the friction wheels 16 carried uponthe, intermediate shafts 15. Pivotally connected to the extremit of thehorizontal arm of said bellcrank ever, and extendin upwardly along theextension 8 u on one si eof the handle 9,. to the, upper on of saidhandle, is a longitudinal movable operating rod 34, operating throughguides upon said extension 8, and connected at its upper end-t0 a pointintermediate the ends with a lever 36 pivoted at oneend to said handle?!adjacent its upper end. Thus when the lever 36 ispressed upwardly tocause the longitudinal movement of the operating rod 34, the bell-cranklever 33 will be rotated upon its ivot to cause the friction a1 engaement o the wheels 17 and 1.6,

.said'rod 34 eing provided with a rigid collar 37 and with a coil spring38 extending between said collar and one of said guides 35 of theextension 8 of the handle, to return a clutch mechanism to its normalunclutched position.

From the foregoing description, it will be readily seen that I provide afloor surfacing mechanism, the direction of movement of which. may bereadily and easily reversed without turning the a paratus around, and inwhich the surfaoero ler 26 may be readily forced into closer engagementwith the floor to be surfaced, by downward pressure upon the handle 9 inthe direction indicated by the arrow 31 in Fig. 1, inasmuch as saidhandle 31 and the supporting arm 24 of said surfacing roller areapproximate parallel with one another and connected by t epivotal link,28.

Having fully described my invention, I A, claim: 4

,1. In afioor surfacing machine of the character described, thecombination with a suprti'ng frame, a motor mounted thereon, aving acentral'shaft projecting therefrom, a surfacing roller exten mgforwardly of said frame, supporting arms aving their ends looselymounted aboutisaid motor shaft and said'surfacing' roller, a beltconnecting said surface roller with said motor shaft, a handle framepivotally mounted adjacent said frame, and extending rearwardlythereofapproximately parallel with said roller support.- lng arms, andpivotalconnectmg lll'l. s ontending between said handle frame and saldroller su porting arms, whereby said roller may be orced into closer enagement with the surface of the floor by a ownward pressureu onsaid handie, and wherebysaid roller may e rotated about said motor shaft toomens the opposite side of Sulfl motor upon the swinging movement ofsaid handle frame, substantially as described.

2. In a floor surfacing machine of the charactor described, thecombination of a supporting frame, propelling wheels carried thereby, amotor mounted upon said sup porting frame and having a centrally pro-;ecting shaft, means for supplying the current to said motor, areversing switch within said means, means for driving said propellingrollers from said motor shaft, a surfacing roller extending forwardlywithin said frame, and having a central shaft pivotal supportin armsconnecting said motor shaft and sail surfacing roller shaft, and looselymounted thereabout, a belt connecting said motor shaft and saidsurfacing roller shaft for driving the latter, a handle frame pivotallymountcdadjacent said supporting frame and extending rearwardly thereof,and pivotal connecting links extendii between said handle frame and saidroller supporting arms, whereby said surfacing roller me be rotatedabout said motor shaft upon tie swinging movement of said handle frame,substantially as described.

3. In a floor surfacing machine of the character described, thecombination of a supporting frame, propelling wheels carried thereby, amotor mounted upon said suporting frame and having a centrally proectingshaft, means for supplying a current to said motor, a reversing switchwithin said means, means for driving said repelling rollers from saidmotor shaft em odyina a relatively slidable member, means for slidingsaid member to connect and disconnect said driving means, a surfacinroller mounted within said frame forwardfy of said ropellin wheels andhaving a central shaft, pivota supportin arms connecting said motorshaft and sai surfacing roller shaft, and loosely mounted thereabout, abelt connecting said motor shaft and said surfacing roller shaft fordriving the latter, a handle frame ivotally mounted adjacent saidsupporti'n frame and extendin rearwardly' thereof, an pivotal connectinginks extending between said handle frame and said roller supportingarms, whereby said surfacin roller may be rotated about said motor s aftupon the swinging movement of said handle frame, substantially asdescribed. 7

.In testimony whereof I affix mysignature in presence of two witnesses.

, JOHN B. DYER. Witnesses:

A. W. ABELE, Asians LAMBERT.

